Funding for this research was provided by:
Kementerian Riset Teknologi Dan Pendidikan Tinggi Republik Indonesia
Article History
First Online: 30 March 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study has been approved by the Ethical Committee of University of Twente.
: Informed consent was obtained from the parents/guardians of all individual participants included in the study.